385566665583 has 8 divisors (see below), whose sum is σ = 560824240896. Its totient is φ = 233676767000.

The previous prime is 385566665557. The next prime is 385566665597.

385566665583 is nontrivially palindromic in base 10.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 385566665583 - 2⁸ = 385566665327 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (385566665483) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5841919143 + ... + 5841919208.

It is an arithmetic number, because the mean of its divisors is an integer number (70103030112).

Almost surely, 2^385566665583 is an apocalyptic number.

385566665583 is a gapful number since it is divisible by the number (33) formed by its first and last digit.

385566665583 is a deficient number, since it is larger than the sum of its proper divisors (175257575313).

385566665583 is a wasteful number, since it uses less digits than its factorization.

385566665583 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11683838365.

The product of its digits is 466560000, while the sum is 66.

The spelling of 385566665583 in words is "three hundred eighty-five billion, five hundred sixty-six million, six hundred sixty-five thousand, five hundred eighty-three".